What are the top 5 private, K-12 schools in the US serving low-income
students? List the schools and cities?  Also, please provide some
semi-objective objective sources that you relied on (newspaper
articles, research reports, etc.)

I am tring to get a short list of private schools serving students in
low-income communities that are doing an excellent job. The schools could
have a theme or approach (like montessori schools). They could serve certain
grades (K-3, 9-12, etc). They could also be parochial schools.

Do not include head start programs, preschools or charter schools.